* 3-Digit, super bright LED voltage meter
* Blue illuminated window with light following played music
* Warning tones for reverse polarity connection, over voltage (>17VCD), or low battery voltage (<10VDC)
* Automatic sleep status when volume is low or there is no voltage variation present
* Working voltage: 16VDC
* Surge voltage: 20VDC
* ESR (Equivalent Series Resistance): 0.015 ohm @ 120Hz, 25°C
* Dimensions (W x H x D): 11" x 3" x 6-1/2"